Dirt-ejecting vacuum cleaner



June 21 1927. 1,635,?61

T. DREW DIRT EJECTING VACUUM CLEANER Filed June 17, 1926 THUMAS DREW A'r'r HMEY Flights June 21, 1927.

UNITED STAT-E5 arrm canes.

'rnom mulw, or new mom, Dull-MING vacuums Application fled June 11, lerlal Io. 118,704.

This invention relates to improvements in vacuum cleaning 'machines,"and its leading object is to provide a vacuum cleaner wit means for directing the air stream to e'ect the dirt accumulated in the bag or hol er.,

Another object of the invention is the provision of an attachment which may be applied, with minor structural changes, to any standard 'electric operated vacuum cleaner, and which will enable the housewife or other operator of the cleaner to discharge the accumulated dirt, without detaching the bag from the suction mechanism.

With the above and other objects in view the invention consists in certain new and useful constructions and arrangements of parts, clearly described in the following specification and fully illustrated in the acpaper or other article.

com an in drawin in which l is a side Elevation of the device attac ed to an electrically driven vacuum cleaner, the dirt bag being shown'partly in section.

Fig. 2 is a vertical sectional view through the ejector control-ling valve, and

Fig. 3 is a transverse sectional view of the e'ector controlling valve on a horizontal p ane considered near the upper end of the valve and its enclosing tubular extension.

Referring to the accompanying drawings illustratin'g the practical embodiment of my invention 5 designates t, e housing of a vac-. uum cleaner, 6 the suction nozzle formed on said housing, and 7 the electrical motor,

which is suitably attached to the housing 5.

A controlling handle 8 is connected by the inverted U-shaped member 9 to the housing of the motor in the usual manner. The above described parts are all old and. well known.

The housing 5 is provided with a discharge nipple 10 to which the dirt holding bag 11 is detachably connected. This bag is sufliciently porous to permit the air stream from the suction fan to pass through the wall of the bag, but to resist the passage of the dirt carried by the air stream.

In the usual practice of houswives and users of electrical vacuum cleaners of the portable type, the dirt bag is detached and the accumulated dirt is em tied upon a This method of handling the dirt accumulated in the holding bag naturally exposes the operator to the eficcts of the (1m with which he or she comes in contact, in the effort to dispose of it. Should any wind strike the paper holder the dirt would be distributed.

To eliminate the (lilliculties arising from the disposal of the dirt accumulated in the holding bag, I arranged a union connection 12 between the bag 11 and the nipple 10. This union is provided with a lateral tubular extension 13 in which the drum valve 14 is normally retained. This drum valve is provided with a partition 15 'which divides the interior of the valve into an air passage 16 and a dirt passage 17. A nipple 18 is in normal open communication with the air passage 16, and a nipple 19 is in normal open communication with the dirt passage 17.

The side wall 14 of the drum valve is provided with an air opening 14, which is normally closed by the wall of the tubular extension 13, and the opposite side wall is provided with a dirt opening 14 which is also normally closed by the wall of the tubular extension 13. The air nipple 18 extends above the tubular extension and the dirt nipple 19 extends downwardly through the bottom wall 20 of the union 12.

In its normal position the valve is elevated above the normal flow of the air stream as shown in Fig. 2, and dirt is discharged in the usual manner directly into the irt bag.

By pushing the drum valve downwardly against the bottom wall 20 b the o grasping the nipple 19 the air opening 14 will be moved into direct communication with the dischar e nipple 10, and the dirt opening 14 will be moved into communication with the bag 11.

The air nipple is connected to an air conduiti 21, which extends, exteriorly, to the upper end of the dirt bag 11, and when the valve is ushed downwardly against the wall 20, t e air propelled bv the suction fan will be blown into the bag from the upper end downwardly, and the dirt which has settled in the bottom of the bag will be blown outwardly through the ejector dirt nipple. By placing this nipple over a suitable receptacle; while operating the suction producing electrical motor, the bag may be gluoickly emptied, without being detached m the housin Referring to ig. 2. The drum valve 14 is understood to be in the elevated full line position. The full line arrows 22 indicate the path .of the air into the bag 11 when operating as a suction cleaner. The air cannot escape since the wall 13 and partition 15 will prevent it. When the drum valve 14 is moved downward into the dotted line position,- air, will be driven by the fan as indicated by the dotted line arrows 23. It will pass through the opening 14" nipple 18 into the upper end of the bag 11 through the bag, opening 14 and through the exit tube 19, thus ejecting the accumulated dirt from the bag 11. The partition 15 serves to direct the flow of air into the bag at the bottom', or, at the top of the bag, it is only necessary to raise or lower the drum valve 14. When the drum shaped valve 14 is lowcred into the dotted line position the normal flow of dirt laden air into the'lower end of the rece tacle is cut ofl.

Having escrihed my invention I claim 1. In a vacuum cleaner an elongated dirt receptacle, means for attaching the dirt receptacle to the body of the vacuum cleaner comprising a pipe connection to'which an end of the said receptacle is attached, the

pipe connection having an upper hollow extension, :1. pipe'leading from the extension and communicating with the interior of the extension, a valve body which is slidably located in the extension and formed with across and t rough the said pipeconnection.

2. In a vacuum cleaner, a dirt receptacle, a pipe connection member to which the lower end of the receptacle is connected, an extension on the upper side of'said connection, and to which the upper end of the said receptacle is connected, a valve slidable in the extension and which is formed with opposltely dis osed ports, a partition plate in the valve or separating the ports, said extension of the pipe connection and one f side of the partition plate having communication with the interior of the receptacle at its upper end, a discharging tubular member having communication with the extension of the pipe connection and located on the other side of the partition in the slidable valve.

In testimony whereof I affix my signature.

THOMAS DREW. 

